CN201562053U - Fully metal packaged piezoelectric earthquake wave detector - Google Patents
Fully metal packaged piezoelectric earthquake wave detector Download PDFInfo
- Publication number
- CN201562053U CN201562053U CN2009201986968U CN200920198696U CN201562053U CN 201562053 U CN201562053 U CN 201562053U CN 2009201986968 U CN2009201986968 U CN 2009201986968U CN 200920198696 U CN200920198696 U CN 200920198696U CN 201562053 U CN201562053 U CN 201562053U
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- metal
- hollow out
- glass insulator
- walking beam
- thin plate
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Abstract
The utility model relates to a fully metal packaged piezoelectric earthquake wave detector, which mainly comprises a rectangular sheet electric component, a hollow vibration beam, a metal outer casing, a metal end cover and a small glass insulator, wherein the rectangular sheet electric component is fixed on the working surface of the hollow vibration beam; the rectangular sheet electric component and the hollow vibration beam are arranged in the metal outer casing; the metal end cover is welded and fixed on the hollow vibration beam; the small glass insulator is welded on the metal end cover; the small glass insulator is respectively connected with the positive electrode and the negative electrode of the rectangular sheet electric component; the leading-out end of the small glass insulator is connected with a PVC leading-out conducting wire; and an anti-leakage layer is arranged in the connecting part of the PVC leading-out conducting wire and the small glass insulator. The utility model has the advantages that the insulation strength of the wave detector is effectively enhanced; the wave detector can resist pressure and oil, and prevent leakage; and the service life can be prolonged. The utility model effectively decreases the interference of the outside electromagnetic signal and flow noise to the wave detector, and also can decrease the influence on the heat conduction in the welding process.
Description
Technical field
The utility model relates generally to the marine oil field of seismic exploration, and especially marine acoustics sensor device field mainly is a kind of piezo-electric type seismic event wave detector of all-metal encapsulation.
Background technology
Along with seismic exploration technique is developed to three-dimensional high definition rate direction by two dimension, the acquisition mode of seismic data is also changed to digitizing by simulated.Piezoelectric seismometer is the core component of system acquisition stratum reflected sound signal, is the acoustic sensor that receives submarine earthquake ripple echo.When the sensitive element in the piezoelectric seismometer is sensed from submarine earthquake ripple echoed signal, this echo acoustical signal can be converted into electric signal output, just can access seismic exploration data data in detail accurately with processing by analysis.Seismoreceiver has a variety of forms, and the wave detector of piezo-electric type is adopted in the collection of low-frequency earthquake waves signal usually.Abroad, the digitizing high-resolution seismic survey system of French SERCEL company exploitation occupies leading position at the global ocean petroleum exploration field, and its digital streamer inside is exactly the piezo-electric type seismoreceiver that U.S. BENTHOS company has been installed.
At home, owing to be subjected to the material prescription of rectangular thin plate piezoelectric element and the restriction of manufacture craft, and in the Metal Packaging technological process, the heat that produces can produce significant impact to the rectangular thin plate piezoelectric element, and the piezoelectric seismometer of development normally adopted the polyurethane method for filling to encapsulate in the past.The urethane rubber sound transparent layer directly contacts with the piezoelectric element surface, because polyurethane material itself has water absorptivity, has slow permeability, piezoelectric seismometer behind the form, its dielectric strength is very fast to be reduced because of making moist, and the electric leakage that has increased wave detector is disturbed, and has shortened the serviceable life of wave detector.Simultaneously, because there is instability in the polyurethane material of perfusion with the variation of temperature, pressure and time, acoustical behavioies such as its density, the velocity of sound and entrant sound also can change, thereby influenced the acoustical behavior of wave detector, so the wave detector poor stability of perfusion type.In addition, the characteristic impedance of metal material (ρ c), Young modulus and linear expansion coefficient etc. also can cause very big influence to the acoustical behavior of wave detector, heat conduction in the heating welding process also can make sensitive element the depolarization phenomenon occur, has seriously restricted the raising of piezoelectric seismometer performance.
Summary of the invention
The utility model will solve the shortcoming of above-mentioned prior art, and the piezo-electric type seismic event wave detector that a kind of function admirable is stable, the all-metal of long service life encapsulates is provided.
The utility model solves the technical scheme that its technical matters adopts: the piezoelectric seismometer of this all-metal encapsulation, mainly comprise the rectangular thin plate electric device, the hollow out walking beam, metal shell, metal end and small-sized glass insulator, the rectangular thin plate electric device is fixed on the workplace of hollow out walking beam, rectangular thin plate electric device and hollow out walking beam are located in the metal shell, one end of hollow out walking beam stretches out metal shell, be welded with metal end on the hollow out walking beam, be welded with small-sized glass insulator on the metal end, small-sized glass insulator links to each other with the positive and negative electrode of rectangular thin plate electric device respectively, the exit of small-sized glass insulator is connected with PVC and draws lead, and the junction that PVC draws lead and small-sized glass insulator is provided with anti-leakage layer.
Fix by cementing agent between described rectangular thin plate electric device and the hollow out walking beam.
Described anti-leakage layer is the urethane rubber of polyether-type.
The positive electricity pole-face of described rectangular thin plate electric device to the negative electricity pole-face, forms " the flower sheet " of positive and negative electrode coplane through top flange rounding off, leaves insulation layer in the middle of the flower sheet, and electrode surface is bright and clean smooth.
Described hollow out walking beam is the rectangular parallelepiped of being made by the metallic copper alloy precision, and the center hollow out connects, and the inner concave surface after the hollow out is the receiving plane of low-frequency sound wave, and edge thickness is even and smooth, and the surface helps weldering and corrosion-inhibiting coating.
The surface of described metal end is provided with and helps weldering and corrosion-inhibiting coating.
Described small-sized glass insulator is made up of central conductor post and casing body, and the central conductor post is positioned at casing body central authorities, and the surface is coated with gold or nickel.
The effect that the utility model is useful is: two bipack-film combinations in parallel of two rectangular thin plate piezoelectric elements of the present utility model and the bonding firm formation of hollow out walking beam, on acoustic construction, the hollow out walking beam is the backing of rectangular thin plate piezoelectric element, vibration mode is the flexural vibrations of bipack-film, boundary condition is an edge rigidity freely-supported, the back side is that air chamber does not have filling, symmetric configuration, and compact conformation, volume are small and exquisite; The positive electricity pole-face of rectangular thin plate piezoelectric element to the negative electricity pole-face, forms " the flower sheet " of positive and negative electrode coplane through top flange rounding off, is convenient to the wave detector electrode and is connected to form relation in parallel.The output of electric signal is by the switching of small-sized glass insulator, and the dielectric strength of wave detector is improved in the intrusion path of having blocked humid air effectively, has also improved voltage endurance capability simultaneously; The integrally-built connection of wave detector slit place all uses the sealing of all-metal soldered, can resistance to compression, oil resistant and anticorrosion, prolong the serviceable life of wave detector.Simultaneously can effectively reduce of the influence of space electromagnetic interference signal, reduce the self noise of wave detector wave detector.Epoxy adhesive is selected high insulation resistance and high stability, mix the filling alumina powder in specific ratio, purpose is existing firm and stable adhesive effect, can block electrically contacting of sensitive element and metal shell again, effectively reduce external electromagnetic signal and flow noise to the interference of wave detector, also can reduce the heat conducting influence of welding process.
Description of drawings
Fig. 1 is the utility model structural representation.
Description of reference numerals: rectangular thin plate electric device 1, hollow out walking beam 2, metal shell 3, metal end 4, small-sized glass insulator 5, anti-leakage layer 6, PVC are drawn lead 7, cementing agent 8.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in the figure, the piezoelectric seismometer of this all-metal encapsulation, mainly comprise rectangular thin plate electric device 1, hollow out walking beam 2, metal shell 3, metal end 4 and small-sized glass insulator 5, rectangular thin plate electric device 1 is fixed on the workplace of hollow out walking beam 2 by cementing agent 8, form two bipack-film parallel components, cementing agent 8 is an epoxy adhesive, according to epoxy resin, hardening agent, 1: 1: 0.6 part by weight of filling agent mixes to be made, existing firm adhesive effect can be blocked the electric connection between the bipack-film again, to reduce the interference of external electromagnetic signal to wave detector.Bonding agent 8 special formula effects also can reduce the heat conduction of welding process.Rectangular thin plate electric device 1 and hollow out walking beam 2 are located in the metal shell 3, one end of hollow out walking beam 2 stretches out metal shell 3, metal shell 3 is used to support two bipack-films vibration component in parallel, have resistance to compression and sealing effectiveness simultaneously, metal shell 3 needs welded seal with the place, slit that is connected of hollow out walking beam 2, be welded with metal end 4 on the hollow out walking beam 2, the effect of metal end 4 is the other ends that support two bipack-films vibration component in parallel, simultaneously also as the transfer platform of extension line, the surface of metal end 4 is provided with and helps weldering and corrosion-inhibiting coating, be welded with small-sized glass insulator 5 on the metal end 4, small-sized glass insulator 5 is made up of central conductor post and casing body, the central conductor post is positioned at casing body central authorities, and the surface is coated with gold or nickel.Small-sized glass insulator 5 links to each other with the positive and negative electrode of rectangular thin plate electric device 1 respectively, form relation in parallel on the circuit, the exit of small-sized glass insulator 5 is connected with PVC and draws lead 7, the junction that PVC draws lead 7 and small-sized glass insulator 5 is provided with anti-leakage layer 6, the joint that 6 couples of PVC of anti-leakage layer draw lead 7 and small-sized glass insulator 5 coats entirely, play the effect of waterproof infiltration, anti-leakage layer 6 is the urethane rubber of polyether-type, seepage rate is low, oil resistant, acid and alkali-resistance, have good stable, suitable piezoelectric seismometer can be worked for a long time.
Rectangular thin plate electric device 1 is made through high temperature sintering by highly sensitive PZT-5 piezoelectric, thickness is about 0.2 millimeter, the positive electricity pole-face of rectangular thin plate electric device 1 through top flange rounding off to the negative electricity pole-face, form " the flower sheet " of positive and negative electrode coplane, leave insulation layer in the middle of the flower sheet, electrode surface is bright and clean smooth, and is good with the tin solder weldability.
Hollow out walking beam 2 is rectangular parallelepipeds of being made by the metallic copper alloy precision, and the center hollow out connects, and the inner concave surface after the hollow out is the receiving plane of low-frequency sound wave, and edge thickness is even and smooth, and the surface helps weldering and corrosion-inhibiting coating.Two rectangular thin plate piezoelectric element 1 usefulness cementing agents 8 accurately stick on the workplace of hollow out walking beam 2, are connected in parallel with thin wire, form two bipack-films vibration component in parallel.The thickness of hollow out walking beam 2 need mate with rectangular thin plate piezoelectric element 1 and tack coat, just can obtain best vibration conversion effect.
At first be the preparation of cementing agent, can not produce bubble and layering, the colloid flowability will be got well; Two rectangular thin plate piezoelectric elements 1 are after the hacking and the processing of deoiling, accurately, entirely be bonded in the workplace assigned address of hollow out walking beam 2, use special-purpose anchor clamps, apply appropriate pre _ stress, after treating that cementing agent 8 solidifies, form two bipack-films, connect the positive and negative electrode of bipack-film respectively with thin wire, protect thin wire with the polyamide insulating tape, so just finished the assembling of bipack-film vibration component; Two small-sized glass insulators 5 are fixed on the metal end 4, the positive and negative electrode of one end and bipack-film vibration component is welded to connect, the other end welds respectively with double-colored PVC extension line 7 and draws, extraction electrode as wave detector, after finishing line, with vibration component and metal end 4 metal shell 3 internal fixation of together packing into, all meet the place of meeting with the sealing of low-temperature metal soldering tech firmly, form resistance to compression, corrosion resistant, anti-seepage effect.The temperature of noting the low-temperature metal soldering will reduce as much as possible, avoids because the sensitive element depolarization that heat conduction causes.With urethane rubber casting sealing PVC wire bonds point, after waiting to solidify and cleaning, anti-leakage layer has so just been carried out, and has also finished the piezoelectric seismometer of all-metal encapsulation simultaneously and has made overall process at last.
Bonding with hollow out walking beam 2 by two highly sensitive rectangular thin plate piezoelectric elements 1, the bipack-film combination of vibrations of a parallel connection of formation is embedded in cylindrical metal shell 3 central authorities.Rigid seal connects between hollow out walking beam 2 and metal shell 3 and the metal end 4.Its principle of work is the bipack-film flexural vibrations that utilize rectangle piezoelectric sheet 1 and hollow out walking beam 2 to form, the simple boundary condition, and the air backing, profile is the right cylinder of metallic seal, has resistance to compression and antisepsis.For improving the antiseep of wave detector, corrosion resistance, signal extension line pass through small-sized glass insulator 5 switchings of high temperature sintering.Owing to adopted metal soldered and Sealing Technology, liquid medium such as the sensitive element of wave detector inside and seawater are isolated fully, greatly improved the dielectric strength of wave detector, suppress electric leakage effectively, reduced the influence of the electromagnetic interference (EMI) in the environment to wave detector, prolonged the serviceable life of wave detector, and acoustical behavior such as sound pressure sensitivity, acceleration sensitivity, electric capacity have advantages such as good stability with the variation of pressure, temperature, time.Can be used as the acoustic sensor of surveying submarine earthquake wave reflection signal, be mainly used in the towing line array data acquisition system (DAS) in marine geophysical prospecting field, the acoustical signal that especially is suitable as the multi-thread battle array of digital sonar neutral buoyancy towrope receives primitive.
In addition to the implementation, all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (8)
1. the piezoelectric seismometer of all-metal encapsulation, mainly comprise rectangular thin plate electric device (1), hollow out walking beam (2), metal shell (3), metal end (4) and small-sized glass insulator (5), it is characterized in that: rectangular thin plate electric device (1) is fixed on the workplace of hollow out walking beam (2), rectangular thin plate electric device (1) and hollow out walking beam (2) are located in the metal shell (3), one end of hollow out walking beam (2) stretches out metal shell (3), be welded with metal end (4) on the hollow out walking beam (2), be welded with small-sized glass insulator (5) on the metal end (4), small-sized glass insulator (5) links to each other with the positive and negative electrode of rectangular thin plate electric device (1) respectively, the exit of small-sized glass insulator (5) is connected with PVC and draws lead (7), and the junction that PVC draws lead (7) and small-sized glass insulator (5) is provided with anti-leakage layer (6).
2. the piezoelectric seismometer of all-metal encapsulation according to claim 1 is characterized in that: fixing by cementing agent (8) between described rectangular thin plate electric device (1) and the hollow out walking beam (2).
3. the piezoelectric seismometer of all-metal encapsulation according to claim 2, it is characterized in that: described cementing agent (8) is an epoxy adhesive.
4. the piezoelectric seismometer of all-metal encapsulation according to claim 1, it is characterized in that: described anti-leakage layer (6) is the urethane rubber of polyether-type.
5. the piezoelectric seismometer of all-metal encapsulation according to claim 1, it is characterized in that: the positive electricity pole-face of described rectangular thin plate electric device (1) through top flange rounding off to the negative electricity pole-face, form the colored sheet of positive and negative electrode coplane, leave insulation layer in the middle of the flower sheet, electrode surface is bright and clean smooth.
6. the piezoelectric seismometer of all-metal encapsulation according to claim 1, it is characterized in that: described hollow out walking beam (2) is the rectangular parallelepiped of being made by the metallic copper alloy precision, the center hollow out connects, inner concave surface after the hollow out is the receiving plane of low-frequency sound wave, edge thickness is even and smooth, and the surface helps weldering and corrosion-inhibiting coating.
7. the piezoelectric seismometer of all-metal encapsulation according to claim 1 is characterized in that: the surface of described metal end (4) is provided with and helps weldering and corrosion-inhibiting coating.
8. the piezoelectric seismometer of all-metal encapsulation according to claim 1, it is characterized in that: described small-sized glass insulator (5) is made up of central conductor post and casing body, and the central conductor post is positioned at casing body central authorities, and the surface is coated with gold or nickel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201986968U CN201562053U (en) | 2009-11-02 | 2009-11-02 | Fully metal packaged piezoelectric earthquake wave detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201986968U CN201562053U (en) | 2009-11-02 | 2009-11-02 | Fully metal packaged piezoelectric earthquake wave detector |
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| Publication Number | Publication Date |
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| CN201562053U true CN201562053U (en) | 2010-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201986968U Expired - Lifetime CN201562053U (en) | 2009-11-02 | 2009-11-02 | Fully metal packaged piezoelectric earthquake wave detector |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944898A (en) * | 2012-11-14 | 2013-02-27 | 中国石油天然气集团公司 | Three-dimensional receiving array type acoustic system |
| CN104078795A (en) * | 2014-05-08 | 2014-10-01 | 珠海市泰德企业有限公司 | Underground sealing connection device of earthquake monitoring equipment and assembling method thereof |
| CN105607116A (en) * | 2016-03-17 | 2016-05-25 | 西安陆洲智能传感技术有限公司 | Passive piezoelectric geophone movement, and passive piezoelectric detector based on the same |
| CN107884817A (en) * | 2017-12-13 | 2018-04-06 | 中国地质大学（武汉） | A kind of piezoelectric seismometer |
| CN113885072A (en) * | 2021-10-18 | 2022-01-04 | 河北华通线缆集团股份有限公司 | Embedded solid cable detector and manufacturing process thereof |
-
2009
- 2009-11-02 CN CN2009201986968U patent/CN201562053U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944898A (en) * | 2012-11-14 | 2013-02-27 | 中国石油天然气集团公司 | Three-dimensional receiving array type acoustic system |
| CN102944898B (en) * | 2012-11-14 | 2014-05-14 | 中国石油天然气集团公司 | Three-dimensional receiving array type acoustic system |
| CN104078795A (en) * | 2014-05-08 | 2014-10-01 | 珠海市泰德企业有限公司 | Underground sealing connection device of earthquake monitoring equipment and assembling method thereof |
| CN104078795B (en) * | 2014-05-08 | 2017-01-25 | 珠海市泰德企业有限公司 | Underground sealing connection device of earthquake monitoring equipment and assembling method thereof |
| CN105607116A (en) * | 2016-03-17 | 2016-05-25 | 西安陆洲智能传感技术有限公司 | Passive piezoelectric geophone movement, and passive piezoelectric detector based on the same |
| CN105607116B (en) * | 2016-03-17 | 2017-12-01 | 西安陆洲智能传感技术有限公司 | Passive piezoelectric seismometer movement and the passive piezoelectric seismometer based on the movement |
| CN107884817A (en) * | 2017-12-13 | 2018-04-06 | 中国地质大学（武汉） | A kind of piezoelectric seismometer |
| CN107884817B (en) * | 2017-12-13 | 2023-09-26 | 中国地质大学（武汉） | Piezoelectric geophone |
| CN113885072A (en) * | 2021-10-18 | 2022-01-04 | 河北华通线缆集团股份有限公司 | Embedded solid cable detector and manufacturing process thereof |
| CN113885072B (en) * | 2021-10-18 | 2023-10-24 | 河北华通线缆集团股份有限公司 | Embedded solid cable detector and manufacturing process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHONGHAI OIL FIELD SERVICE CO., LTD. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xu Ping Inventor after: Fei Teng Inventor after: He Haifeng Inventor after: Yang Kai Inventor before: Xu Ping Inventor before: Fei Teng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: XU PING FEI TENG TO: XU PING FEI TENG HE HAIFENG YANG KAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101104 Address after: Hangzhou City, Zhejiang province 310012 Xihu District Huaxing Road No. 96 Co-patentee after: China Oilfield Services Limited Patentee after: No.715 Inst., China Ship Heavy Industry Group Corp. Address before: Hangzhou City, Zhejiang province 310012 Xihu District Huaxing Road No. 96 Patentee before: No.715 Inst., China Ship Heavy Industry Group Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100825 |